"You know listen, I don't think we should overstate things that it is an Avengers movie, but the Guardians are a part of the cosmic universe, they're a part of Thanos' stories, so, they are in there, and they have, not the biggest, but, an integral part to that," he said.

"Ego is a living planet who is able to manifest himself in different ways he's been alone for millions of years and he's learned how to control the molecules around him in such a way as to create avatars of themselves, such as Kurt Russell," Gunn explained about the character.